NHTSA Complaint #11716547 — 2021 CHEVROLET SILVERADO 3500

ELECTRICAL SYSTEM issue reported to NHTSA

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Complaint Details

ODI Number	11716547
Vehicle	2021 CHEVROLET SILVERADO 3500
Component	ELECTRICAL SYSTEM
Date of Incident	February 3, 2026
Date Filed	February 8, 2026
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	OH

Consumer Description

My 2021 chevy 3500hd diesel had the engine light come on and the service emissions system popped up in the info screen. It said in so many miles speed would be limited. I took it to the dealer and they said the def tank would need replaced because the tank wiring connector overheated and would cost me over $2k.

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